- Designed for Stanley Tumblers: Specifically crafted to create three hollow cylinder ice cubes, this tray fits perfectly in 40 oz Stanley tumblers. Enjoy drinks that stay cooler and more refreshing for longer compared to traditional ice cubes and balls. - Premium Food-Grade Material: Constructed from high-quality silicone and PP material, our ice cube trays are BPA-free, odorless, and non-toxic, ensuring safety for repeated use. Durable and reliable, they are designed to withstand multiple freezing cycles. - Simple to Use and Remove: Fill the trays with water, secure the lid, and place them in the freezer. After a few hours, effortlessly pop out three perfectly shaped hollow cylinder ice cubes from the flexible silicone trays. - Easy to Clean and Store: The included lid and bin stack neatly in your freezer, protecting your ice from odors and dust. The silicone tray is dishwasher safe, while the lid and bin should be washed by hand. Allow to air dry and store in a dry place for easy access. Use Scenarios: - Perfect for summer gatherings, ensuring your beverages remain chilled while entertaining guests. - Ideal for outdoor activities like picnics or camping, providing a convenient way to keep drinks cold. - Great for personal use at home or in the office, enhancing your hydration experience with refreshing, uniquely shaped ice.